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Beilstein J. Org. Chem. 2022, 18, 325–330, doi:10.3762/bjoc.18.36
Graphical Abstract
Scheme 1: Proposal of a Se···O bonding catalysis approach.
Scheme 2: Se···O bonding catalysis approach to the synthesis of calix[4]pyrrole 2a.
Scheme 3: Reaction scope.
Scheme 4: Proposed activation mode.